For

The easiest form of a loop is the for statement. This one has a syntax that is similar to an if statement, but with more options:

for (condition; end condition; change) {
    // do it, do it now
}

Lets for example see how to execute the same code ten-times using a for loop:

for (var i = 0; i < 10; i = i + 1) {
  // do this code ten-times
}

Note: i = i + 1 can be written i++.